What does flattening a PDF do?

Flattening merges interactive form fields and annotations into the static page content, making them non-editable.

No. Flattening runs securely in your browser without uploading.

When should I flatten a PDF?

Flatten before sharing a form to prevent recipients from editing the filled values, or before printing to ensure all annotations are visible.

PDF

Flatten PDF

Convert form fields and annotations into static content.

Click or drag & drop

PDF with form fields or annotations

Upload a PDF with form fields or annotations to flatten.

Flattening preserves the visual appearance of filled forms while removing interactivity.

PixTrimIO keeps PDF and image workflows fast, privacy-friendly, and browser-based. Privacy-first PDF and image tools that run entirely in your browser. Compress, merge, convert, crop, OCR, and edit files online for free without uploading.